Light. Plant it where it gets full sun, 6 or more hours of direct sun a day.
Water. Keep the soil moist but well drained while plants establish. After that they are fairly drought tolerant, especially in organic-rich, mulched soil.
Soil and feeding. It prefers moist, fertile soil that drains well. Give a light monthly feeding of 10-5-10 or a similar fertilizer; too much gives more leaves and fewer flowers.
Size. Usually 1–2 ft tall and about 1 ft wide. Space plants 9–12 in apart.
Pruning. Deadheading is not needed, and it does not need staking.
Problems to watch. It is usually trouble-free, but aphids and powdery mildew can appear. Spray aphids with Insecticidal Soap following the label.
Good to know. Plant in late spring. It handles summer heat and humidity and flowers all season. In Florida it usually acts as a perennial unless a cold winter damages it.
Sources: UF/IFAS Gardening Solutions: Angelonia · NC State Extension Plant Toolbox: Angelonia angustifolia
